Design Considerations for Radial Key Retrofit

by Jan Seyler, Westinghouse Canada Inc, Burlington, Canada,

Document Type: Proceeding Paper

Part of: Waterpower '91: A New View of Hydro Resources


A practise that is becoming more and more common is to retrofit hydro-electric generators with Radial Key Systems. There are significant design considerations that must be made to ensure that a radial key retrofit leads to trouble free operation of the generator. This paper discusses considerations related to stress, vibration and stability in the design of a radial key retrofit. A typical design is outlined along with a method of increasing stator radial stiffness without restraining stator frame thermal expansion.

Subject Headings: Radiation | Rehabilitation | Electrical equipment | Stiffening | Frames | Thermal properties | Hydraulics | Turbines

Services: Buy this book/Buy this article


Return to search